Message-ID: <4193A842.4010406@jhsph.edu>
Date: 2004-11-11T17:58:26Z
From: Roger D. Peng
Subject: expressions and paste
In-Reply-To: <419393CE.31353.1A1A01C@localhost>
Can you be a bit more specific? Exactly what kind of symbol are you
trying to put in the title?
-roger
Emily Baldock wrote:
> I have written a function to plot data which will be used for various different chemistries.
> A simplified version is:
> plot_data <- function(risk,levels,chem,sd2,measure){
> plot(risk, levels,main=paste ("per", sd2, measure, "\n in usual", chem))
> }
> The problem is with the title.
> This works fine if the variable "chem" is just text, but if it is an expression then obviously it won't work.
> I have experimented with various things and I am at a complete loss for how to insert an expression into the middle of
> a title.
> If the expression was going in directly I would use main=expression(paste("text ", expression, " text")) but again this
> doesn't work.
> Can anyone help?
> thanks
> Emily.
>
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--
Roger D. Peng
http://www.biostat.jhsph.edu/~rpeng/